Improved typings (#916)
Improved typings (#916)

* Replaced LinkStyle with TextStyle as LinkStyle doesn't even exist

* Properly typed renderDay and renderTime

* Added optional image prop to IChatMessage

FaridSafi/react-native-gifted-chat,FaridSafi/react-native-gifted-messenger,FaridSafi/react-native-gifted-chat,FaridSafi/react-native-gifted-messenger